package com.guigu.ababa.ababaclassroom.handler;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.util.Date;

@Slf4j
@Component//不要忘记加入到spring容器中
public class MydateHandler implements MetaObjectHandler {
        //插入时填充策略
        @Override
        public void insertFill(MetaObject metaObject) {
            //setFieldValByName(String fieldName, Object fieldVal, MetaObject metaObject)
            this.setFieldValByName("createtime",new Date(),metaObject);
            //this.setFieldValByName("updatetime",new Date(),metaObject);
        }
        //更新时填充策略
        @Override
        public void updateFill(MetaObject metaObject) {

            this.setFieldValByName("updatetime",new Date(),metaObject);
        }
}
